baber/WOPTO huggingface dataset:
Patent GB-1084590-A (GB)
Title: Methacrolein polymers and process for their preparation
IPC: C08G2/00
Filed: 1965-09-09
Abstract: A transparent polymer composition comprising a homopolymer of methacrolein having incorporated therein a stabilizer comprising at least one substituted benzophenone of formula <FORM:1084590/C3/1> where R1 and R3 are both either hydrogen or an alkoxy radical and R2 is a hydroxy group or hydrogen and at least one of the groups R1, R2 or R3 is a radical other than hydrogen is obtained by polymerizing methacrolein of at least 90% purity at a temperature below the m. pt. of methacrolein in the presence of the stabilizer and using a conventional free radical catalyst.  Preferred stabilizers are 2,21-di-hydroxy - 4,41 - dimethoxybenzophenone, 2-hydroxy - 4 - methoxybenzophenone, and 2-hydroxy-4n-octylbenzophenone.
Patent GB-919141-A (GB)
Title: Improvements relating to castor wheel assemblies, primarily intended for snow ploughs
Inventor: HOWIE JAMES BRYSON
IPC: E01H5/06
Filed: 1960-11-11
Abstract: 919,141. Castors. HOWIE Ltd., J. B. Nov. 10, 1961 [Nov. 11, 1960], No. 38812/60. Class 52 (1). A heightwise adjustable castor wheel assembly comprises a swivel member 3 rotatable about a vertical axis, two parallel plates 12 pivoted to the swivel member 3 and a castor wheel 14 rotatably mounted between said plates. Adjustment of looknuts 18 on a screw-threaded strut 15 pivoted between the swivel member 3 and the plates 12 varies the height of the wheel with respect to the swivel member 3.
Patent GB-388260-A (GB)
Abstract: 388,260. Washing air. SCHLICK, G., Langebr³ck, Saxony, Germany. May 21, 1932, No. 14459. [Class 55 (ii).] Air, e.g. for ventilation or conditioning purposes, is drawn through a number of vertical tubes 2 by water jets from centrifugal nozzles 4, one to each tube, the air mixing with the atomized water and flowing over the outer walls of the tubes to an outlet. The tube length is a multiple of the diameter which is varied according to the jet diameter, the tubes being removably or adjustably mounted in a horizontal wall 3. Lateral slots or tangential outlets may be provided at the lower end of the tubes which may be rippled, corrugated, &c. to increase their cooling surface. To prevent a back flow of air a shut-off flap may be mounted to close the tube outlet when the air flow ceases. Outlet slots in the outer casing 1 are provided close to the wall 3. In a modification the tubes 2 are formed by radial partitions round a central air discharge pipe into which the treated air passes through channels formed by tangential vanes. A filtering hood or a body of filtering material may be arranged at the outlet of the discharge pipe. One or more nozzles may be shut off to regulate the cooling effect and amount of air circulated. The tubes may be of telescopic form or the nozzles vertically displaceable, or apertured coverplates may be adjustably mounted on the tubes. The air or water may be cooled or heated before or during contact. Specifications 260,860, 320,567, and 322,899, [all in Class 69 (iii), Spray-producers &c.], are referred to.
Patent GB-1416487-A (GB)
Title: Apparatus including a mechanical seal
IPC: F16J15/34
Filed: 1973-08-16
Abstract: 1416487 End face seals V V IVANOV and B S GORITSKY 16 Aug 1973 38943/73 Heading F2B In an end face seal for a rotary shaft 2 where it extends through a housing 5 containing a medium to be sealed comprising a rotary ring 1 secured to the shaft and a non-rotary cooperating ring 4 sealed to the housing, the sealing face of each ring is provided with recesses 9, 10, the number of recesses in one ring differing from the number in the other ring. A spring 7 urges the ring 4 towards the ring 1. The rings 1 and 4 are sealed to the shaft and housing by sealing rings 3 and 6 respectively. In operation, when the shaft rotates, the recesses 9 form chambers alternately with the face of the ring 4 and the recesses 10 thereby causing fluid pressure pulsations in the sealing gap 8 which, it is stated, improve leakage control and lubrication between the sealing faces. In a modification, Fig. 3, the recesses 10 communicate through a passage 11 with a source of sealing fluid at a pressure exceeding that of the sealed medium. In a further modification, Fig. 5 (not shown), the recesses (9) connect through a passage (12) with the sealed medium.
Patent GB-1205942-A (GB)
Title: Transferred electron oscillators
Inventor: HILSUM CYRIL
IPC: H01L47/00
Filed: 1967-08-25
Abstract: 1,205,942. Semi-conductor devices. MINISTER OF TECHNOLOGY. 23 Aug., 1968 [25 Aug., 1967], No. 39183/67. Heading H1K. High field domain nucleation at the cathode C of a bulk negative resistance device is prevented by the presence of a suppressor electrode S close to the cathode C. A number of closely spaced suppressor electrodes may be provided between the cathode C and anode A, or a single narrow bar-shaped suppressor electrode having a higher resistance than the bulk semiconductor material 1 in parallel with it may be positioned between the cathode and anode. In any of these configurations the suppressor electrode may be capacitively coupled to the semi-conductor body. As shown the device comprises an N-type GaAs layer 1 on a semiinsulating GaAs substrate 3. The electrodes may be of metal or n + GaAs. Other semi-conductor materials referred to are CdTe and InP.
Patent GB-1017217-A (GB)
Title: A system for producing fountain displays
IPC: A63J17/00
Filed: 1962-10-17
Abstract: 1,017,217. Fountains. LICENTIA PATENTVERWALTUNGS G.m.b.H. Oct. 17, 1962 [Oct. 19, 1961], No. 39289/62. Heading FIX. [Also in Division G3] A fountain display is controlled in synchronism with music by causing a perforated strip to interrupt a light beam coacting with a photoelectric cell to emit regulating pulses to the motor and/or valves controlling the fountain jets. The pulses may be synchronized with taperecorded music or indicated acoustically or optically and may be used additionally to control coloured lights.
Patent GB-1204116-A (GB)
Title: Lever coupling system
Inventor: ROBB ANDREW CRAWFORD
IPC: G06M1/10
Filed: 1966-09-05
Abstract: 1,204,116. Linkwork. COUNTING INSTRUMENTS Ltd. 5 Dec., 1967 [5 Sept., 1966], No. 39510/66. Heading F2K. [Also in Division G4] Pivoted levers 40, 30 are coupled by a cantilever spring 42 secured to lever 40 at its pivot point 44 and engaging a bearing point 36 on a projection secured to lever 30. The lever 40 engages a bearing point 38 on the projection which is located at a greater distance from the lever 30 than the point 36. On actuation of an electromagnet 46, lever 40 is drawn towards it and the spring 42 applies a clockwise torque to lever 30. On release of the electromagnetic force, the levers 30, 40 return to positions of equilibrium under the influence of the spring 42. Lever 30 may be an escapement lever engaging a number wheel 34 in a counting mechanism. In a modification, the spring is in the form of a cruciform 48, Fig. 4, which is freely supported on a pivot 44 and is operatively connected to the sides of an armature 40 by a pair of saddles.
Patent GB-1177166-A (GB)
Title: Electrodeposition of Silver
Inventor: FOULKE DONALD GARDNER
IPC: C25D3/46
Filed: 1967-08-30
Abstract: 1,177,166. Electro-plating with silver. SEL-REX CORP. Aug.30, 1967, No.39729/67. Heading C7B.  A conductive surface is electro-plated with silver from an aqueous bath comprising per litre 4 to 75 g. (calculated as Ag) alkali metal silver cyanide, 2 to 100 g. acid plus anionic buffering agent, 2 to 20 g. alkali metal or ammonium thiocyanate, alkali to provide a #H of 6 to 7À5, and optionally up to 100 g. of additional ionic metal. Preferably the bath is just acid; the acid plus anionic buffer is a mixture of a weak acid, e.g. maleic, malonic, sulphanilic, phosphorous or orthophosphoric acid, and an alkali metal or ammonium salt of the weak acid; the alkali is lithium sodium potassium or ammonium hydroxide, ammonia or an alkaline amine; and the additional ionic metal such as nickel, cobalt, iron, copper, zinc, indium, arsenic, antimony or bismuth is present in sufficient amount to effect brightening and may be present as a complex, e.g. nickel tetraethylenepentamine or potassium antimonyl tartrate. It is stated that selenium and mercaptobenzthiazole do not effect brightening when added to the baths.
Patent GB-341694-A (GB)
Title: Improvements in or relating to weighing and counting scales
IPC: G01G19/42
Filed: 1929-12-31
Abstract: 341,694. Weighing - apparatus. AVERY, Ltd., W. & T. and SYKES, C. M., Soho Foundry, Birmingham. Dec. 31, 1929, No. 39821. [Class 143.] Counting by weighing.-A weighing and counting scale embodying two ratio pans and wherein an automatic weight-indicating mechanism is combined with a steelyard mechanism, is characterized in that the odd numbers of a count are determined by a ratio pan which is supported from a weighing lever and capable of being traversed in a longitudinal direction in a straight line away from and towards the fulcrum of the weighing lever as required, the traverse of the ratio pan being capable of being effected when the pan is empty without affecting the equilibrium of the scale. As shown in connection with a platform weighing and counting scale comprising as usual an automatic weightindicating dial and a steelyard 6c carrying a pair of parallel tare beams 6a, 6b, the tare beams have secured thereto L-shaped guides constituting slideways for racks 8, 9 which may be moved simultaneously in opposite directions by means of a pinion 10 and knob 10a. Attached to the upper rack 8 is a shackle 12 supporting on a knife-edge 14 a units pan 15. A pin and slot device 12a limits the swinging of the pan, and an index 12b cooperates with graduations 7a on the tare beam 6a. The weights of the racks and unit pan are selected so that changes in the position of the empty pan do not affect the equilibrium of the scale. Two ratio pans 18, 19 are suspended from opposite arms of. the steelyard at leverages respectively of 71:1 and 72:1 relative to the platform (not shown). The dial is provided with two sets of graduations 20a, 20b for heavy and light loads respectively. In using the apparatus, the articles to be counted are placed in a tared receptacle on the platform and the weight noted on the graduations 20a. One or more articles are then transferred to the pan 18 until the indicator 21 returns to zero when the count is obtained as half a gross for each article in the pan 18. If exact zeroization cannot be obtained the odd dozens and units are determined by placing one article in the pan 15 and adjusting the same by the knob 10a until zeroization is obtained, the surplus numbers being then read on the scale 7a. Articles of light weight may be placed in the pan 19 and their weight read off on the graduations 20b. The weight of a number of half grosses may be ascertained by placing the same number of single articles in the pan 19 and reading off the weight on the graduations 20a.
Patent GB-1313377-A (GB)
Title: Vehicle racing games
IPC: A63H18/02
Filed: 1970-08-19
Abstract: 1313377 Toy vehicle tracks; racing game IDEAL TOY CORP 19 Aug 1970 [22 Oct 1969] 39877/70 Headings A6H and A6S A racing game comprises battery powered vehicles A', B', Fig. 1, having drive means to travel at substantially the same speed along a track 10 comprised of individual track sections forming a first course L 1  and a second course L 2  and two crossover means 26, 26' arranged to switch the vehicles A', B' from one course to another course, each crossover control A, B being manually controlled. The first and second courses L 1 , L 2  may each comprise a guideway in which depending pins of the vehicles A', B' are engageable and the crossovers 26, 26' comprise guideways (42, 44) Fig. 2 (not shown) bridging the courses L 1  and L 2 . The track 10 may comprise at least two crossovers 26, 26' in which there is a common activating member 54, Fig. 3, for lane switching members 46, 48 connected to pneumatic switch activating means each including an actuating bellows 64 into which pressure may be introduced by means of hand controls 68. (For Figures see next page)
Patent GB-1486014-A (GB)
Title: Suction cleaning appliances
IPC: A47L9/22
Filed: 1974-09-12
Abstract: 1486014 Vacuum cleaners HOOVER Ltd 12 Sept 1974 [13 Sept 1973] 39896/74 Heading A4F [Also in Division F2] The motor-fan unit 22, 24 of a canister-type suction cleaner 10, is mounted in a casing by two resilient rings 62, 102 compressed as by studs 51  between annular seatings of the motor-fan unit and horizontal walls of parts 14, 18 of the casing, the motor-fan unit having a suction inlet communicating, preferably via a filter 36, with a chamber 32 having a dust bag 34 extending around the motor-fan unit above the wall 14, and an exhaust outlet lying axially between the rings 62, 102. As shown the ring 102 is smaller than ring 62 but each comprises a ring of solid spheres 64 joined integrally by a flat ring 66, 104 and by a cylindrical ring 68, 106, the rings acting as vibration dampers and as seals. The motor 22 may, as shown, drive two fans 26, 28, the fan 28 drawing in air to cool motor 22 before the air is fed by diffuser 82 to the fans 26 where it is mixed with ambient air drawn in through perforations 122 before the mixture is directed through chamber 126 to exhaust outlet 128. Ambient air may be drawn in by induction, by a third fan or by appropriate modification of the fan 26. In an alternative embodiment, Figs. 5 and 6 (not shown) ambient air is drawn in at the periphery of the casing and the air mixture is ejected through a bottom blower opening (35) so that the casing is suspended on an air cushion obviating the need for wheels 48, 50. Specification 1486015 divided from this application relates to cooling by the ambient air-flow.
Patent GB-869323-A (GB)
Title: Process for the production of high molecular weight, thermoplastically workable polyoxymethylene derivatives
IPC: C08G2/30
Filed: 1959-11-24
Abstract: Polyoxymethylene of intrinsic viscosity of at least 1,0 (in 0,5% para-chlorophenol solution at 60 DEG C.) is reacted with an orthoester of a carboxylic acid in combination with an acidic catalyst (preferably a Lewis acid) or with an alkyl ester of a polyhydroxy mineral acid in solution or dispersion at room temperature up to 160 DEG C.  Specified orthoesters are the p orthoformic acid methyl and ethyl esters; Specified Lewis acids are zinc and aluminium chlorides, tin tetrachloride, boron trifluoride, boron trifluoride-diethyl ether adduct; specified alkyl esters of mineral acids are dimethyl sulphite and sulphate; tri-isopropyl borate, tetraethyl silicate and tetrabutyl titanate-these last esters may be used together with acidic or basic catalysts, e.g. pyridine. Solvents specified are cyclohexane, decahydronaphthalene, benzene, toluene and xylene.  A stabilizer such as secondary and tertiary aromatic amines and phenolic compounds, e.g. di-beta-naphthyl-para-phenylene diamine may be added to the reaction product.
Patent GB-1400778-A (GB)
Title: Shovelling vehicle
IPC: E02F9/08
Filed: 1972-08-29
Abstract: 1400778 Shovelling machines RHEINSTAHL AG HANOMAG BAUMASCHINEN 29 Aug 1972 [8 Sept 1971] 39967/72 Heading E1F [Also in Division B7] A shovelling machine comprises two carriages 1, 2 for carrying shovel means and motor respectively linked by two pivotal connections, one on each side of a central longitudinal axis A; means being provided for effecting pivoting about one or the other conneabion for steering purposes. In the embodiment shown in Fig 1 rods 5R, L are pivotally attached to lugs 8R, L on carriage 1 and can be moved by piston and cylinder units 7R, L through bearings in carriage 2. In Fig 4 lugs 9R, L mounted on different carriages are pivotally linked by plate 11 and a piston and cylinder unit 12 acts between the carriages; releasable restraining means 10R, L being associated with each of the lugs. In a further embodiment (Fig 5, not shown) the means 10R, L are omitted but separate piston and clyinder units (15, 16) act between the carriage 1 and 9R and between carriage 2 and 9L. In all cases the piston and cylinder units may be replaced by screw, rope, or tooth wheel devices
Patent GB-1026604-A (GB)
Title: Pneumatic tire spreader
IPC: B60C25/14
Filed: 1963-10-11
Abstract: 1,026,604. Tyre spreaders. PAUL E. HAWKINSON CO. Oct. 11, 1963 [Nov. 7, 1962], No. 40275/63. Heading B7C. A tyre spreader supported on a base frame comprises an annular forwardly opening cuplike member 10 rotatably mounted on a horizontally disposed tubular housing: 4 through which passes an elongated axially extensible and retractable member 8 and a plurality of circumferentially spaced bearing sleeves 24 mounted within the member 10 for limited swinging movements towards and away from the member 8 in parallel relationship therewith, the forward end portion of each sleeve 24 being provided with a radially outwardly projecting spreader element 29, together with. a plurality of mounting arms 30 each of which has an intermediate portion slidably received within one of the bearing sleeves while the rear end portions thereof are received and guided in radially extending slots 31 in the closed rear end 12 of the mounting member 10 and the forward end portions thereof are provided wish spreader elements 32 which co-operate with the elements 29 carried by the bearing sleeves 24. The forward ends of the mounting arms 30 are connected by means of actuator links 35 to a collar 34 rotatably mounted in the forward end  of the extensible and retractable member 8. Compression springs 38 mounted on the arms 30 between the bearing sleeves 24 and the closed rear end 12 of the member 10 bias the sleeves 24 towards their radially extended positions. The bearing sleeves 24 are supported within the member 10 by pairs of parallel links 25. In operation the extensible and retractable member 8 is retracted so that the spreader arms 30 are brought closely together against the action of the springs 38. A tyre A is then placed over the forward ends of the arms 30 with the spreader elements 29, 32 interposed between the tyre beads B. Initial extending movement of the member 8 will then cause the arms 30 to swing radially outwardly to engage the beads B due to the yielding bias of the springs 38 against the sleeves 24. Further extension of the member 8 will cause the spreader elements 32 to move away from the spreader elements 29 and thus spread the beads B apart for purposes of inspection and repair. The tyre A may be rotated by imparting rotary movement to the member 10 through a pair of laterally spaced rollers which engage the outer surface of the cylindrical wall of the member and which are driven by an electric motor.
Patent GB-999021-A (GB)
Title: Rapping mechanism for emission electrodes in electrical precipitators
IPC: B03C3/76
Filed: 1962-10-24
Abstract: 999,021. Electrostatic precipitation. SVENSKA FLAKTFABRIKEN A.B. Oct. 24, 1962 [Oct. 27, 1961], No. 40324/62. Heading B2J. Rapping mechanism for emission electrodes in electrostatic precipitators comprising an electrically-insulating shaft 3 disposed between the drive 2 and hammer-carrying shaft 1, is provided with a conical hood 6 rotatable with the drive-shaft and a scraping iron 7 for preventing dust collecting on the shaft 3. The scraping iron may be arranged to form an angle with the generatrix of the hood.
Patent GB-1248826-A (GB)
Title: Bleaching method
IPC: D06L3/02
Filed: 1969-08-13
Abstract: 1,248,826. Bleaching cottons. ATLANTIC RICHFIELD CO. 13 Aug., 1969 [2 Oct., 1968], No. 40567/69. Heading DIP. Cotton materials, e.g: fabrics, are bleached by contacting them with an organic hydroperoxide in the vapour phase. Specified hydroperoxides are butyl, cumene and amyl hydroperoxides. In the examples the material is wetted with a buffer or alkaline solution and then introduced into an atmosphere of water vapour and tert butyl hydroperoxide in equilibrium with the liquid phase at 70‹C. and held there for 1 to 4 hours. After bleaching the material is generally treated with a sulphite such as sodium bisulphite or sodium dithionite. The bleached material may be dried before the sulphite treatment. Cotton fabric may include some synthetic fibres.
Patent GB-1441537-A (GB)
Title: Methods of forming a semiconductor device
IPC: H01L21/205
Filed: 1974-09-18
Abstract: 1441537 Semi-conductor devices INTERNATIONAL BUSINESS MACHINES CORP 18 Sept 1974 [15 Oct 1973] 40598/74 Heading H1K A semi-conductor heterojunction is formed by depositing a layer 3 of aluminium nitride or gallium nitride on a semi-conductor substrate 1 and a PN homo junction 5 is formed in the substrate 1 by diffusion of Al or Ga atoms from the layer 30, The junction-forming diffused region 4 may be formed simultaneously with the deposition of the layer 3, which may be by reactive sputtering or vacuum evaporation of elemental Al or Ga in a nitrogen atomosphere or by the reaction of, for example, a gaseous gallium compound with ammonia. Alternatively the deposition, e.g. by sputtering or reactive vacuum evaporation, may occur at too low a temperature to permit diffusion, which takes place in a subsequent heating step under conditions which protect the nitride layer 3 against dissociation. A protective layer of silicon dioxide or aluminium oxide or an ammonia or reactive nitrogen atmosphere may provide the necessary protection against dissociation. Preferred conditions of temperature, &c., for the various above-mentioned processes are disclosed. The semi-conductor substrate 1 may be of S, Ge, SiC or GeC and may be entirely N type (e.g. As, P, or Sb-doped for Si) or may be basically intrinsic or P type (B-doped for Si) with N type strips or areas 6 on to which the nitride layer 3 is selectively deposited using a silicon dioxide masking layer 2. The structure illustrated constitutes a bi-stable switch effectively having a diode in series therewith.
Patent GB-1125667-A (GB)
Title: Readback systems for information storage systems
IPC: G11B20/10
Filed: 1966-09-12
Abstract: 1,125,667. Data storage read back device. RADIO CORPORATION OF AMERICA. 12 Sept., 1966 [5 Oct., 1965], No. 40644/66. Headings G4C and G5B. A readback system that reads back signals recorded on a storage medium by signals of the kind shown in Fig. 2a having pulses of first and second half periods (T, 2T,) includes means (30) for producing a bi-polar readback signal having pulses corresponding to the first and second half periods (Fig. 2d), a delay circuit 42 for delaying the readback signal for a time delay equal to the first half period, means for adding the delayed signal to the initial signal to produce a correction signal (Fig. 2#) substantially devoid of pulses of the first half period and having pulses of the second half period partially cancelled and means 48 for adding the correction signal to the initial signal to boost the amplitude of portions of the second half period pulses (Fig. 2g). Data recorded on magnetic tape 11 is read by a head 12 producing a signal 15 (Fig. 2c). The high frequency components in the signal are boosted and quadrantally phase shifted, in addition to the quandrantal phase shift produced by the read head, to produce signal 16. This is delayed by circuit 42, added to signal 16 in a summer 44 to produce signal 22, which is attenuated in circuit 46 and added to signal 16 to correct the discrepancies in signal 16 at the peaks of the second half period waveforms and the following first half peak waveform caused by the poor low frequency response of the read head, the low frequency signal being caused by the pattern changes when the signal changes from a series of 1's or 0's to a series of 0's or 1's. The final signal 23 can then be applied to a crossover detector to extract synchronizing timing signals.